<div class="clock-container">
  <div class="flip">
    <div class="digital front" data-num="0"></div>
    <div class="digital back" data-num="0"></div>
  </div>
  <div class="flip">
    <div class="digital front" data-num="0"></div>
    <div class="digital back" data-num="0"></div>
  </div>
  <div class="divider">:</div>
  <div class="flip">
    <div class="digital front" data-num="0"></div>
    <div class="digital back" data-num="0"></div>
  </div>
  <div class="flip">
    <div class="digital front" data-num="0"></div>
    <div class="digital back" data-num="0"></div>
  </div>
  <div class="divider">:</div>
  <div class="flip">
    <div class="digital front" data-num="0"></div>
    <div class="digital back" data-num="1"></div>
  </div>
  <div class="flip">
    <div class="digital front" data-num="0"></div>
    <div class="digital back" data-num="1"></div>
  </div>
</div>
